320 BRYACEiE. [mjpnum. 



simple or branching: perichoetium whitish, the inner leaves 

 narrowly acuminate, costate : capsule cernuous or subarcuate, 

 oblong ; operculum rostrate, yellow ; segments entire, separated 

 by one or two thin cilia; annulus compound, broad. — Muse. 

 Recent. Suppl, ii. 154. Pseudoleskea catenulata, Bruch & 

 Schim]). Bryol. Eur. t. 478. Leskea catenidata^ Lindb. 



Hab. Mount Ingleborougli, New York {JVowell, fide Schimper in Syn. 

 ed. 2, 605). 



We have never seen an American specimen of tliis moss, nor can we 

 find trace of the locality given by Scliimper. 



3. H, radicosuni, Mitt. Dioecious : plants intricately ces- 

 pitose : leaves spreading, loosely intricate, subsecund at the 

 apex of the branches, ovate-lanceolate, acuminate, concave; 

 eosta percurrent ; borders reflexed, serrulate at the apex ; bas- 

 ilar cells narrow, round-quadrate, the upper oblong, soft ; para- 

 phyllia lanceolate ; perichastial leaves large, erect, convolute, 

 oval, lanceolate-acuminate, the outer ecostate, the inner thinly 

 costate to tlie middle, serrulate at the apex. — Journ. Linn. Soc. 

 viii. 31. IT. tenax., Drumm. Muse, Amer. n. 225, not Hedw. 

 II. congestnm, Wils. Ms., and Pseudoleskea C07igesta, Bruch 

 & Scliimp. in Bryol. Eur. Pseudoleskea^ 2. 



Var. gracilis. Plants smaller: leaves narrower, longer 

 acuminate: capsule inclined ; peristome less perfect. — Leskea 

 rigesce7is, Wils. Ms., referred to Lescurea by Bruch & Schimp. 

 in Bryol. Eur. under that genus. Pseudoleskea rigescetis, Lindb. 

 Act. Soc. Fenn. x. 247. 



H/Vn. Banks of Portage River, British America, on roots of trees near 

 the ground, and the variety in dryer situations, on branches of trees 

 (Briimmond, n. 225). 



Snllivant examined all the specimens given under the above number 

 from four different sets of Drummond's first collection. He remarks, 

 in a note, that the species varies according to habitat. Growing on the 

 roots of trees near the ground, it is more robust and condensed; in dryer 

 situations on the branches of trees, it is more slender and lax. Of the 

 first form are Mitten's specimens, which are sterile and incomplete; of 

 the second are the specimens of three sets from which Wilson made his 

 Leskea rigescens. 



Subgenus IL LIETEROCLADIUM. 



Stem vaguely pinnate and ramulose. Stem-leaves cordate- 

 ovate, lanceolate, obscurely short-bicostate, open or subsquar- 

 rose, smooth or minutely papillose ; medial areolation narrowly 



